#include<stdio.h>
int main()
{
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	int n,m,x,y,t;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d%d%d%d",&n,&m,&x,&y);
		if(x<=5 || y<=5 || x>=n-4 || y>=m-4)
			printf("DA\n");
		else
			printf("NU\n");
	}
	return 0;
}